{"id":3368,"date":"2014-08-17T08:12:19","date_gmt":"2014-08-17T08:12:19","guid":{"rendered":"https:\/\/live-infoblox-blog.pantheonsite.io\/?p=3368"},"modified":"2020-05-06T10:31:33","modified_gmt":"2020-05-06T17:31:33","slug":"ipv6-and-openstack","status":"publish","type":"post","link":"https:\/\/www.infoblox.com\/blog\/ipv6-coe\/ipv6-and-openstack\/","title":{"rendered":"IPv6 and OpenStack"},"content":{"rendered":"

You can\u2019t go anywhere these days without hearing about cloud-based services.\u00a0 Even novice Internet users who are not tech-savvy now refer to the Internet as \u201cthe Cloud.\u201d\u00a0 These people are not the least bit familiar with the IT infrastructure required to establish a cloud service or the software that is used to manage and maintain a cloud service.\u00a0 Thankfully we have experienced IT staff to handle those minute details and thankfully we have\u00a0OpenStack<\/a>.<\/p>\n

OpenStack<\/a>\u00a0is an open-source Apache License software system written in Python that helps facilitate the building and maintenance of cloud-based infrastructure.\u00a0 OpenStack components work together to allow the deployment of pools of compute, storage and network virtualization resources to form Infrastructure as a Service (IaaS) cloud systems.\u00a0 There are various software components that make up the OpenStack architecture and an IT administrator can interact with the system through a web dashboard, a RESTful API, CLI tools, and other configuration files and settings.\u00a0 The full OpenStack architecture is modular and now has many various code-named components for configuration of compute resources (Nova), object storage (Swift), block storage (Cinder), networks (Neutron), the Horizon dashboard, among many others.<\/p>\n

OpenStack is gaining ground among the largest IT companies who traditionally sell proprietary systems that lead to vendor lock-in.\u00a0 The fact that these companies have embraced OpenStack shows what a powerful movement this is and how exceptionally the OpenStack community is operating.\u00a0 OpenStack development is very active and it is keeping pace with the latest data center virtualization and networking technology trends; with one of these trends being the increased adoption of IPv6.<\/p>\n

OpenStack History and Lineage:<\/h2>\n

OpenStack was first created in 2010 as the result of research done by\u00a0NASA<\/a>\u00a0and\u00a0Rackspace<\/a>\u00a0Hosting.\u00a0 Now the development of OpenStack has grown well beyond the initial research stage and many organizations are involved in its development \u2013 and many more organizations are utilizing OpenStack for their own cloud infrastructures.<\/p>\n

OpenStack\u00a0releases<\/a>\u00a0are timed roughly every six months to coincide with their community conferences.\u00a0 However, early on, OpenStack releases were occurring quite frequently because of rapid development efforts.\u00a0\u00a0Austin<\/a>\u00a0was the name of the first OpenStack released at the end of 2010.\u00a0 In early 2011 the next OpenStack release named\u00a0Bexar<\/a>\u00a0was released, which included integration with Ubuntu 11.04.\u00a0 In Spring 2011 the next release, named\u00a0Cactus<\/a>, arrived. And later in 2011 OpenStack \u201cDiablo<\/a>\u201d appeared, followed by \u201cEssex<\/a>\u201d in 2012 and “Folsom<\/a>” later that same year.\u00a0 There seems to be an alphabetical pattern forming here.<\/p>\n

In 2012, the\u00a0OpenStack Foundation<\/a>\u00a0was formed to help promote OpenStack software and coordinate efforts among the vast numbers of code contributors.\u00a0 The OpenStack Foundation is non-profit group that helps to promote the benefits of using OpenStack and fosters an ecosystem of developers, users, and companies that help OpenStack grow.\u00a0 The OpenStack Foundation now has almost 10,000 members from all over the world.<\/p>\n

As\u00a0mentioned before<\/a>, many new products are often launched with only IPv4 capabilities.\u00a0 It isn\u2019t until later in their lifecycle that IPv6 capabilities are painstakingly added to products out of necessity to keep them current.\u00a0 Refreshingly, that was not the case with OpenStack.\u00a0 IPv6 features started to appear as early as the\u00a0Bexar<\/a>\u00a0release.\u00a0 Starting in the Bexar release you had to set the \u201cuse_ipv6\u201d flag to true for the Nova process Common function.\u00a0 In the\u00a0Cactus<\/a>\u00a0release more IPv6 capabilities were added to the Nova Compute module. However, as the subsequent releases (Diablo, Essex and Folsom) were released, no new significant IPv6 capabilities were added.<\/p>\n

OpenStack\u00a0Grizzly<\/a>\u00a0was released in the Spring of 2013 and it inherited the IPv6 capabilities from the earlier OpenStack releases.\u00a0 Ciprian Popoviciu and his team at Nephos6 created a tremendously\u00a0useful tutorial<\/a>\u00a0on how to set up a\u00a0Grizzly<\/a>\u00a0OpenStack deployment to use IPv6.\u00a0 Because IPv6 is not supported out of the box there are many settings required to get it to work (and prior to this document very little information was available on the subject).\u00a0 This document takes you through the settings for configuring IPv6 for a simple multi-tenant infrastructure example.\u00a0 The document also follows some of the challenges they encountered along the way with IPv6 configuration.<\/p>\n

Havana<\/a>\u00a0was the name of the eighth release OpenStack and became available in October 2013.\u00a0 Once again, Nephos6 created an updated IPv6\u00a0deployment guide<\/a>\u00a0for the Havana release.\u00a0 This document follows the same style of multi-tenant environment, but there were fewer challenges encountered with dual-stack deployment.\u00a0 The document also covers the\u00a0Open vSwitch<\/a>\u00a0and a few of the issues an implementer is likely to encounter.<\/p>\n

Icehouse<\/a>\u00a0is the name of the most current OpenStack release (April 2014).\u00a0 Shixiong Shang has created a\u00a0presentation<\/a>\u00a0on the topic of configuring IPv6 with OpenStack Icehouse.\u00a0 Thanks should be given by the OpenStack community to Nephos6 for highlighting the importance of dual-stack configuration for cloud environments that may eventually streamline IPv6 deployment.<\/p>\n

Currently, work is being done on the OpenStack\u00a0Juno<\/a>\u00a0release that will be issued later this year (as well as the subsequent Kilo release in 2015).\u00a0 Groups are already planning for some new IPv6 features in Juno and Kilo.\u00a0 Improvements would include better ICMPv6 RA support in Neutron,\u00a0RADVD<\/a>\u00a0support,\u00a0Dnsmasq<\/a>\u00a0and DHCPv6, DHCPv6Prefix Delegation, among others.<\/p>\n

DDI and OpenStack:<\/h2>\n

One of the key OpenStack configuration issues highlighted by the Nephos6 research and testing team revolved around the assignment of IPv6 addresses to Nova compute instances.\u00a0 When OpenStack is used to facilitate instantiation of a new IaaS service, implementers must be careful with how VMs are getting assigned address and how DNS resolution is performed.\u00a0 Every time you instantiate a new virtual compute instance, it needs both an IPv4 and IPv6 address.\u00a0 Ideally, it would be able to be given both an IPv4 address and an IPv6 address from an IP Address Management (IPAM<\/a>) system.\u00a0 Using a process of address assignment was tied into a robust IP Address Management (IPAM) system for determining what IP addresses (IPv4 or IPv6) were available to allocate new compute nodes. This would help prevent duplicate addresses and gain greater address efficiency.\u00a0 Ed Horley\u2019s\u00a0previous Infoblox blog<\/a>\u00a0covered the importance of having a DDI solution integrated with open-source systems like OpenDaylight and OpenStack.<\/p>\n

OpenStack\u00a0Neutron<\/a>\u00a0(i.e. Network Service) has some IPv6 limitations with its L3 agent and L3 router extension.\u00a0 In the configuration of OpenStack, IP addresses can either be statically assigned or assigned with DHCP.\u00a0 When it comes to IPv6 systems, static configuration of addressing is very similar to IPv4 address static configuration (with the possible exception of an IPv6 link-local next-hop address for the first-hop router).\u00a0 For DHCPv6 to work properly in OpenStack it requires that an ICMPv6 Routing Advertisement (RA) message must be send by the local router.\u00a0 In my\u00a0previous blog<\/a>\u00a0we covered the importance of the RA message for address assignment in server networks and end-user access networks.\u00a0 That is the area where most of the OpenStack dual-protocol configuration issues were encountered.<\/p>\n

Learning More:<\/h2>\n

There are many resources available online for those who want to learn more about OpenStack.\u00a0 One thing that you can do is join your local OpenStack MeetUp.\u00a0\u00a0MeetUp<\/a>\u00a0is a web site that helps small local groups get organized and meet face-to-face.\u00a0 MeetUp has over 18 million members and over 160,000 groups and the OpenStack community has leveraged this format to get like-minded individuals together.\u00a0 The OpenStack MeetUp groups meet to share ideas, discuss current OpenStack topics, and coordinate their efforts in contributing and testing code.\u00a0 For example, in my neighborhood we have the \u201cDenver OpenStack<\/a>\u201d group that meets monthly and covers various topics related to OpenStack.\u00a0 There is probably a similar OpenStack MeetUp in your neighborhood.<\/p>\n

If you want to learn more about IPv6 and how it is used with OpenStack, cloud systems, SDN, the Internet of Things (IoT), then you should consider attending the 7th<\/sup>\u00a0annual 2014 North American IPv6 Summit.\u00a0 This is the largest IPv6 event in North American and it is being held in Denver, CO, USA September 23-25.\u00a0 In fact, Infoblox is the\u00a0premier diamond-level sponsor<\/a>\u00a0of this year\u2019s conference.\u00a0 More information on this year\u2019s conference and past materials on IPv6 is available for free at\u00a0http:\/\/www.rmv6tf.org\/<\/a>.\u00a0 If you can\u2019t make it to Denver, but still want to gain the knowledge, you can register to attend the virtual conference for only $30.\u00a0 We hope to see you there!<\/p>\n","protected":false},"excerpt":{"rendered":"

You can\u2019t go anywhere these days without hearing about cloud-based services.\u00a0 Even novice Internet users who are not tech-savvy now refer to the Internet as \u201cthe Cloud.\u201d\u00a0 These people are not the least bit familiar with the IT infrastructure required to establish a cloud service or the software that is used to manage and maintain […]<\/p>\n","protected":false},"author":321,"featured_media":3187,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[17],"tags":[16,15],"class_list":{"0":"post-3368","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-ipv6-coe","8":"tag-infoblox","9":"tag-security","10":"entry"},"acf":[],"yoast_head":"\nIPv6 and OpenStack<\/title>\n<meta name=\"description\" content=\"You can\u2019t go anywhere these days without hearing about cloud-based services.\u00a0 Even novice Internet users who are not tech-savvy now refer to the Internet as \u201cthe Cloud.\u201d\u00a0\" \/>\n<meta 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Scott Hogg specializes in teaching Internet Protocol version 6 (IPv6) and providing implementation guidance. Scott is CCIE #5133 (Emeritus) and CISSP #4610. Scott is Chair Emeritus of the Rocky Mountain IPv6 Task Force (RMv6TF), a member of the IPv6 Center of Excellence (COE), and co-author of the Cisco Press book on IPv6 Security.","sameAs":["https:\/\/hexabuild.io"],"url":"https:\/\/www.infoblox.com\/blog\/author\/scott-hogg\/"}]}},"_links":{"self":[{"href":"https:\/\/www.infoblox.com\/blog\/wp-json\/wp\/v2\/posts\/3368","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.infoblox.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.infoblox.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.infoblox.com\/blog\/wp-json\/wp\/v2\/users\/321"}],"replies":[{"embeddable":true,"href":"https:\/\/www.infoblox.com\/blog\/wp-json\/wp\/v2\/comments?post=3368"}],"version-history":[{"count":1,"href":"https:\/\/www.infoblox.com\/blog\/wp-json\/wp\/v2\/posts\/3368\/revisions"}],"predecessor-version":[{"id":3369,"href":"https:\/\/www.infoblox.com\/blog\/wp-json\/wp\/v2\/posts\/3368\/revisions\/3369"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.infoblox.com\/blog\/wp-json\/wp\/v2\/media\/3187"}],"wp:attachment":[{"href":"https:\/\/www.infoblox.com\/blog\/wp-json\/wp\/v2\/media?parent=3368"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.infoblox.com\/blog\/wp-json\/wp\/v2\/categories?post=3368"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.infoblox.com\/blog\/wp-json\/wp\/v2\/tags?post=3368"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}